TwitterISIS savages sent this 10-year-old boy to die in their bloody war, according to their sick boasts on social media.

The murderous militants posted online images of the machine-gun-toting child they called their youngest jihadi and claimed he was “martyred” two weeks ago with his father in a US airstrike.

The twisted terrorists identified the boy — described as a “cub fighter” — by his nom de guerre, Abu Ubaidah, and said he and his shockingly callous dad, identified only as Baghdadi, died in Syria.

The chilling photos and video show the boy clad in military fatigues as he gleefully brandishes a weapon as long as he is tall, the Islamic State Times reported on its Twitter feed.

A video depicts him firing the weapon while an adult’s voice offers instruction in Arabic. Another image shows him smiling and draped in an ammo vest while posing next to a crude, makeshift armored vehicle.

Some sickos took to Twitter to praise the young fighter.

“I’m crazy about Abu Ubaidah more than belieber to justin bieber,” tweeted a person called lZZAH.

But others decried the images as despicable.

“Absolutely disgusting,” wrote Trinity, using the hashtags #childabuse and #crimesagainsthumanity.

It was the latest example of the terrorists involving children in their bloody attacks in Syria and Iraq.

In August, photos emerged showing a 7-year-old Australian boy whose father is that country’s most-wanted Islamic terrorist holding up a severed head in Syria.

Meanwhile, the United States and its allies pounded ISIS positions with stepped-up airstrikes Thursday as the Sunni thugs battled Kurdish forces street by street in the key Syrian town of Kobani on the Turkish border.

The radicals called in forces from their main base in Raqqa and elsewhere in the territory they’ve captured across Syria and Iraq.

The desperate battle for Kobani has emerged as a major test for the US air campaign, with a growing chorus of military and regional critics expressing grave doubts that airstrikes alone can turn the tide.